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Synthèses dans la série des bis-indéno-fluorènes, VIII. Méthyl-6-dihydro-9,15-7H-bis-indéno[2.1-b;2′.1′-g]fluorène

✍ Scribed by Louis Chardonnens; Thomas Stauner

Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
298 KB
Volume
57
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Starting from 5‐benzoyl‐2,4‐dibromobenzoic acid and 3‐methyl‐fluorene, the 6‐methyl‐9,15‐dihydro‐7H‐diindeno[2.1‐b; 2′,1′‐g]fluorene, a derivative of a mono‐angular diindenofluorene has been synthesized in 5 steps (overall yield 1,5%).

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## Abstract Starting from 3, 4‐dimethylfluorene the title compound, 5, 6‐dimethyl‐7, 12‐dihydro‐indeno[1,2‐a]fluorene (IV), is synthesized in four steps (overall yield 9%). The same hydrocarbon is also obtained in four steps starting from the phthalaconecarboxylic acid of __Gabriel__. This corrobor